9798631217 has 8 divisors (see below), whose sum is σ = 9825960960. Its totient is φ = 9771338080.

The previous prime is 9798631211. The next prime is 9798631229. The reversal of 9798631217 is 7121368979.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9798631217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9798631211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578288 + ... + 594990.

It is an arithmetic number, because the mean of its divisors is an integer number (1228245120).

Almost surely, 2^9798631217 is an apocalyptic number.

It is an amenable number.

9798631217 is a deficient number, since it is larger than the sum of its proper divisors (27329743).

9798631217 is a wasteful number, since it uses less digits than its factorization.

9798631217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18303.

The product of its digits is 1143072, while the sum is 53.

The square root of 9798631217 is about 98988.0357265463. The cubic root of 9798631217 is about 2139.8753251529.

The spelling of 9798631217 in words is "nine billion, seven hundred ninety-eight million, six hundred thirty-one thousand, two hundred seventeen".